Black gold examines the coffee supply chain and follows it back to its origin, Ethiopia, which is the biggest coffee producer in Africa. Ethiopia is also the birthplace of coffee. Harvested and drank for thousands of years, Ethiopia produces some of the world's finest coffee beans. Yet, despite the rise of the coffee industry over the last decade, Ethiopian coffee farmers still struggle to feed their families. There are 15 million Ethiopians who depend on coffee for their livelihood. The movie follows Tadesse Meskela for some time, he is the general manager of Oromia Coffee Farmers, which is a coffee co-op that represents 74,000 coffee farmers in the Ethiopia. In the documentary Meskela shows us the process the coffee beans go through before they leave Ethiopia. Co-ops are common in Ethiopia and in the coffee industry; their job is to bargain power to farmers who are often undercut by coffee buyers. The needs of all the farmers and families are looked after by the co-op, while each farm worker owns a share of what is collectively earned. Often, the co-op can only do enough to keep it's members barely fed, let alone afford luxuries such as health care, education, clothing and clean water. The movie directors often cut back to the hardships in Ethiopia. When Meskela tells the coffee farmers that a cup of coffee is $2.90. The farmers react with disbelief and even amusement at the idea of paying more for a cup of coffee than 10 kilos of beans. And then Meskela tells the farmers that one kilogram of coffee beans is used to produce 80 cups of coffee in the western world, the farmers are stunned into silence. The farmers are speechless as they realize that their hard work and suffering has been exploited for profit. This brutally unfair trade crisis is the result of price fixing in western countries such as New York and London. The western countries are taking the farmers advantage of, forcing them to...

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...The industrial separation process that I have decided to do is gold separation. Gold separation can be done in a number of ways but there is not always one way to do it, but the combination of a couple of these processes to extract pure gold. Gold is obtained form the lithosphere. It is separated from the ore found in the lithosphere.
Gold's symbol is Au. Its atomic number is 79 and has an atomic mass of 196.96655 amu. Its melting point is 1064.43°C, while its boiling point is 2807.0 °C. It is a transition metal and is yellow or gold in colour.
There are also many principles used in the separation of gold. One of these is boiling points in the process of smelting. In Froth floatation, the principle is the organic chemicals in the gold which causes it to float when disturbed by air in a tank.
When gold is separated, there is also a bi-product or waste. The waste that comes from the mining of the gold is often used as land fill. This is after further minerals are extracted from the gangue. Waste products are also found in the froth flotation process. Here, the wet gangue is taken to a dam, usually lined with cement, called a tailings dam. The water is allowed to evaporate and the solid waste (tailings) is disposed of. It must however be disposed of safely as it may contain small amounts of toxic lead and zinc. Polluted water from the dam...

...﻿1. Describe the operating cycle of Alaska Gold Company. At what stage in this cycle
does the company incur costs of gold production? When is cash collected from
customers? When does the company recognize revenues?
Cost of production is incurred at producing stage. Cash is collected at point of sale. Revenue is recognized at point of sale.
2. In your opinion, at what stage in its operating cycle should Alaska Gold Company
recognize revenue? Why? (For this question, ignore the constraints imposed by
generally accepted accounting principles.)
I think it should be producing completion stage because it'll more accurately depict the way the company is operating.
3. How does Alaska Gold Company account for “thawing costs”? Is this appropriate?
Why or why not?
Thawing cost are depreciated on the units-of-production basis over the estimated yards of gravel benefited. I believe it is appropriate because the thawing process maybe results in materials used for many years.
4. Calculate the market price of gold per ounce at yearend 1975, 1976 and 1977.
Gold inventory in Oz:
75 prod. 12632, 76 prod. 14320, 77 prod. 11563
Gold inventory at cost
75 prod. 1262524, 76 prod. 2856511(sum), 77 prod. (4990286-2856511)=2133775
Market price
End of year Market price Ounces Price/oz.
1975 1711000 12632 $135
1976 3606517 26952 $134
1977 5838018 38515 $152
5. Assume that...

...What Is Gold?
Gold is a rare metallic element that is found naturally in the Lithosphere of the Earth, normally in veins of quartz and other deposits. It can be found in a free state or in a combination with other metals.
Classification:
Gold is a transition metal
Color:
golden yellow
Atomic weight:
196.9665
State:
solid
Melting point:
1064.18 oC, 1337.33 K
Boiling point:
2850 oC, 3123 K
Electrons:
79
Protons:
79
Electron shells:
2,8,18,32,18,1
Density @ 20oC:
19.32 g/cm3
Gold is obtained from a variety of ores. Most people think of nuggets and such, but the truth is that very little comes from nuggets - nearly all newly mined gold comes from ores mined from the natural hard rocks that contain gold in tiny, even microscopic particles.
Various separation and refinement processes are used to extract the gold for profitable use. Some of the main processes include:
Froth Floatation/ Separation floatation
Filtration
Precipitation reaction
Smelting
Froth Floatation / separation floatation – Gold extraction
1. The Ore containing small particles of ore are transferred to a mill, where it is ground down to ultra-fine “sand-like” particles.
2. The ground particles are then mixed with a liquid mixture with frothing agents to induce separation of other constituents and the gold. The frothing agents include:
a. Amyl alcohol
b. Camphor
c....

...wealthy king has 8 bags of gold- all the gold in the kingdom, which he trusts to 8 of his most trustworthy caretakers; one bag to each caretaker. All the bags have equal weight and contain the same amount of gold, totaling all the gold in the kingdom. But one day, the king hears a story that a woman from another kingdom received a gold coin. The king knew it had to be his gold, because he owned all thegold in the kingdom. Someone was spending his gold! So he decided to find the lightest bag of the 8 using a pan scale to weigh the bags of gold.
The King expected that it would take 3 weightings to determine the lightest bag of gold, but the mathematician thinks the lightest can be determined in less. I need to find out the lowest number of times that the King will have to weigh his gold to determine the lightest bag.
Process:
I started by weighing 4 bags on each side of the scale to see which side was lighter. Then from those results, I thought to weigh the 4 bags that were on the lighter side by 2 and 2. After this you would find one side weighing less than another. Then you would take those results and weigh the 2 remaining bags and the lightest bag would be the bag that was taken from.
However, the mathematician said it could be done in less than three steps. So throwing the answer I had just gotten to the...

...Gold is a non-ferrous metal ores, which are mostly metal ore dust mixed dust , free silica
content is generally more than 10%, even up to 90 %. Some gold mines , most of the production
in quartz veins , free silica content is generally above 60 %. Under this situation ,
according to the national emission standards , Crushing And Screening PlantVentilation and dust removal system effluent concentration should not exceed 100 mg/m 3 (free silica content of less than lO% of the mineral dust emissions allowable concentration of 150 mg/m 3 ) .
The concentration of dust in the air and dust is a measure of the dispersion of the important
factors to human hazards of dust . According to the Health specification , production dust
containing more than lO% free silica dust in the workshop maximum allowable working zone
concentration of 2 mg/m 3 , with lO% = less free silica dust , the maximum allowable
concentration of 10 mg/m 3. According to the information, the majority of alveolar deposition
of dust particles in the 0.2 to 2 microns in diameter . Thus , generally considered less than
5 microns of dust most harmful to humans .
So take certain removal equipment is very necessary work , it is not only related to the
health of staff, but also seriously affect the long-term development of enterprises.
(1)Material humidification humidification material is a very important measure dust , if the
production permits,...

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Gold NanoparticlesA Novel Nanoparticulate Drug Delivery System |
Lejo. R. Prasad / 000392026Drug Design and Delivery CHEM-1081
Dr. Dionysios Douroumis
February 2013 |
Gold Nanoparticles
-------------------------------------------------
A Novel Nanoparticulate Drug Delivery System
Introduction
The use of nanoparticles is a fairly recent development and has proved to be an ideal platform for the target specific delivery of various therapeutic agents. Nanoparticles recently over the last decade, different nanomaterial have been used to design various delivery vehicles, which includes, liposomes, dendrimers, polymers, nanotubes and nanorods. Metallic nanomaterial’s have attracted interest for use not only in drug delivery but also in various other fields due to their properties. A metal that has been of considerable study in this aspect is gold. Since the early 1950’s gold nanoparticles (GNPs) have been used as diagnostic indicators and therapeutics. One of the requirements for effective therapy is the efficient and targeted release of various therapeutic agents. GNPs are of the highest quality and their unique chemical and physical properties can be exploited for transporting and unloading of various therapeutic agents (Thassu, D, 2007). Therefore, GNPs have been found to be an ideal candidate for the delivery of various payloads such as small drug molecules and large biomolecules...

...Corporation: Managing Gold Price Risk
1. Hedging Motivation In terms of the gold mines owners, they hedge nothing against the price drop risk of gold output. As the profits, cash flows and stock price were tied of gyrations in the price of gold. As to the gold, there was always a ready market for their product, at market prices, once extracted from the earth and refined. Hedging against the risks can protect the downside of gold price, enable the both the shareholders and investors to share the price premium, the high operation leverage and high sunk costs, limit the ability to adjust production and lock-in the low total costs. Historically, American Barrick Resources Corporation’s hedge position had allowed it to profit handsomely and to sell its commodity output at prices well above market rates. Moreover, the firm’s insistence on bearing low financial was attributed to an earlier failed business experience by Mr. Munk and his subsequent distrust of high leverage. Investors also desire some exposure to gold prices, but they want this exposure managed prudently. But by hedging against the gold risk, shareholders may sacrifice the upside of gold price, ahead the unsystematic risk. 2. Vehicles of Hedging Gold Financings: American Barrick used bullion loans and gold-indexed underwritten offerings to raise funds for...

...﻿Global Silver and Gold-based Brazing Materials Market 2015-2019
Brazing is defined as the process of joining two metals by deploying a filler metal such as a brazing alloy. In the brazing process, the filler metal is heated slightly above its melting point and allowed to flow through capillary action in between the two base metals that require joining. This process is normally undertaken in a controlled atmosphere called the flux.
The flux is used to prevent, dissolve, or remove oxides that are formed during the brazing process. Brazing is similar to soldering, except that the melting point of the filler metal used in brazing is above 840 degrees Fahrenheit, while the melting point of that used in soldering is below 840 degrees Fahrenheit.
Covered in this Report
This report covers the present scenario and the growth prospects of the Global Silver and Gold-based Brazing Materials market for the period 2015-2019. To arrive at a ranking of the leading market vendors and to calculate the market size, the report considers revenue generated through the sales of silver and gold-based brazing alloys for brazing applications. It presents the vendor landscape and a corresponding detailed analysis of the top three vendors in the market.
View our full TOC here
Key Regions
EMEA
APAC
Americas
Key Vendors
Johnson Matthey plc
Lucas-Milhaupt Inc.
MTC Wesgo Metals
Other Prominent Vendors
Aimtek
Bellman-Melcor
Harris Products Group
Indian...